diff --git a/Annotation/ApiDoc.php b/Annotation/ApiDoc.php
index d5ac8cd..5e5a0aa 100644
--- a/Annotation/ApiDoc.php
+++ b/Annotation/ApiDoc.php
@@ -61,7 +61,7 @@ class ApiDoc
     }
 
     /**
-     * @return array|null
+     * @return array
      */
     public function getFilters()
     {
diff --git a/Tests/Annotation/ApiDocTest.php b/Tests/Annotation/ApiDocTest.php
new file mode 100644
index 0000000..61a0c15
--- /dev/null
+++ b/Tests/Annotation/ApiDocTest.php
@@ -0,0 +1,168 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle.
+ *
+ * (c) Nelmio <hello@nelm.io>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\Tests\Annotation;
+
+use Nelmio\ApiDocBundle\Annotation\ApiDoc;
+use Nelmio\ApiDocBundle\Tests\TestCase;
+
+class ApiDocTest extends TestCase
+{
+    public function testConstructWithoutData()
+    {
+        $data = array();
+
+        $annot = new ApiDoc($data);
+
+        $this->assertTrue(is_array($annot->getFilters()));
+        $this->assertCount(0, $annot->getFilters());
+        $this->assertFalse($annot->isResource());
+        $this->assertNull($annot->getDescription());
+        $this->assertNull($annot->getFormType());
+    }
+
+    public function testConstructWithInvalidData()
+    {
+        $data = array(
+            'unknown'   => 'foo',
+            'array'     => array('bar' => 'bar'),
+        );
+
+        $annot = new ApiDoc($data);
+
+        $this->assertTrue(is_array($annot->getFilters()));
+        $this->assertCount(0, $annot->getFilters());
+        $this->assertFalse($annot->isResource());
+        $this->assertNull($annot->getDescription());
+        $this->assertNull($annot->getFormType());
+    }
+
+    public function testConstruct()
+    {
+        $data = array(
+            'description' => 'Heya',
+        );
+
+        $annot = new ApiDoc($data);
+
+        $this->assertTrue(is_array($annot->getFilters()));
+        $this->assertCount(0, $annot->getFilters());
+        $this->assertFalse($annot->isResource());
+        $this->assertEquals($data['description'], $annot->getDescription());
+        $this->assertNull($annot->getFormType());
+    }
+
+    public function testConstructDefinesAFormType()
+    {
+        $data = array(
+            'description'   => 'Heya',
+            'formType'      => 'My\Form\Type',
+        );
+
+        $annot = new ApiDoc($data);
+
+        $this->assertTrue(is_array($annot->getFilters()));
+        $this->assertCount(0, $annot->getFilters());
+        $this->assertFalse($annot->isResource());
+        $this->assertEquals($data['description'], $annot->getDescription());
+        $this->assertEquals($data['formType'], $annot->getFormType());
+    }
+
+    public function testConstructMethodIsResource()
+    {
+        $data = array(
+            'resource'      => true,
+            'description'   => 'Heya',
+            'formType'      => 'My\Form\Type',
+        );
+
+        $annot = new ApiDoc($data);
+
+        $this->assertTrue(is_array($annot->getFilters()));
+        $this->assertCount(0, $annot->getFilters());
+        $this->assertTrue($annot->isResource());
+        $this->assertEquals($data['description'], $annot->getDescription());
+        $this->assertEquals($data['formType'], $annot->getFormType());
+    }
+
+    public function testConstructMethodResourceIsFalse()
+    {
+        $data = array(
+            'resource'      => false,
+            'description'   => 'Heya',
+            'formType'      => 'My\Form\Type',
+        );
+
+        $annot = new ApiDoc($data);
+
+        $this->assertTrue(is_array($annot->getFilters()));
+        $this->assertCount(0, $annot->getFilters());
+        $this->assertFalse($annot->isResource());
+        $this->assertEquals($data['description'], $annot->getDescription());
+        $this->assertEquals($data['formType'], $annot->getFormType());
+    }
+
+    public function testConstructMethodHasFilters()
+    {
+        $data = array(
+            'resource'      => true,
+            'description'   => 'Heya',
+            'filters'       => array(
+                array('name' => 'a-filter'),
+            ),
+        );
+
+        $annot = new ApiDoc($data);
+
+        $this->assertTrue(is_array($annot->getFilters()));
+        $this->assertCount(1, $annot->getFilters());
+        $this->assertEquals(array('a-filter' => array()), $annot->getFilters());
+        $this->assertTrue($annot->isResource());
+        $this->assertEquals($data['description'], $annot->getDescription());
+        $this->assertNull($annot->getFormType());
+    }
+
+    /**
+     * @expectedException \InvalidArgumentException
+     */
+    public function testConstructMethodHasFiltersWithoutName()
+    {
+        $data = array(
+            'description'   => 'Heya',
+            'filters'       => array(
+                array('parameter' => 'foo'),
+            ),
+        );
+
+        $annot = new ApiDoc($data);
+    }
+
+    public function testConstructNoFiltersIfFormTypeDefined()
+    {
+        $data = array(
+            'resource'      => true,
+            'description'   => 'Heya',
+            'formType'      => 'My\Form\Type',
+            'filters'       => array(
+                array('name' => 'a-filter'),
+            ),
+        );
+
+        $annot = new ApiDoc($data);
+
+        $this->assertTrue(is_array($annot->getFilters()));
+        $this->assertCount(0, $annot->getFilters());
+        $this->assertEquals(array(), $annot->getFilters());
+        $this->assertTrue($annot->isResource());
+        $this->assertEquals($data['description'], $annot->getDescription());
+        $this->assertEquals($data['formType'], $annot->getFormType());
+    }
+}
diff --git a/Tests/TestCase.php b/Tests/TestCase.php
new file mode 100644
index 0000000..cac7c71
--- /dev/null
+++ b/Tests/TestCase.php
@@ -0,0 +1,16 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\Tests;
+
+class TestCase extends \PHPUnit_Framework_TestCase
+{
+}